From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Application of a Borg and Beck clutch to a Bentley with a narrow pin crankshaft.
| Identifier | ExFiles\Box 129\2\ scan0033 | |
| Date | 30th March 1935 | |
| To BY.{R.W. Bailey - Chief Engineer} from HDY.{William Hardy} c. Wor.{Arthur Wormald - General Works Manager} B. Hs.{Lord Ernest Hives - Chair} Da.{Bernard Day - Chassis Design} RHC.{R. H. Coverley - Production Engineer} HDY.{William Hardy}1/HP.30.3.35. Borg and Beck Clutch. N. Sch.4435 shows the application of a Borg and Beck clutch to Borg and Beck drawing No.SK.30600/2 to the Bentley with narrow pin crankshaft. The 10" clutch to drawing No.SK.30604/2 is equally applicable to this scheme. The spring centre indicated is that shewn for the 10" clutch. We show no other means of locating the clutch on the flywheel than appears to be used by Borg and Beck, i.e. the use of fitting set screws. The clutch withdrawal shaft is further back and higher up than the existing shaft and will require casing alterations accordingly. The clutch withdrawal shaft is carried in plain bearings as now. Our scheme deals only with the pedal shaft carried at the inner end on the clutch casing. The total pedal plate travel at the centre of the plate from fully worn to fully out is 4.550" and from new to fully out is 3.650 as shown in GL.{G. Linnett}760 and F.86386, and the average pedal plate load assuming 300 lbs at the thrust bearing is 40.5 lbs which includes the pull off spring. HDY.{William Hardy} | ||